Cecilia, Carolina, Matilde e Matteo 1°BS
40 mm
10 mm
10 mm
experiment on osmosis
With this experiment we wanted to observe the reaction of some sticks of potato in different solutions, to verify the osmosis effect.
WHAT WE USED
WHAT WE UNDERSTOOD
With this experiment we have understood that not only the particles of the solutions can move into or out the cells but also the molecules of the solvents (water). This movement is called OSMOSIS. We also have seen that the sticks in the distilled water and in the dilute sugar solution became bigger than the other in concentrated sugar solution. This because, when the solution is more concentrated, the quantity of water that move down the water potential gradient is smaller than the quantity of water of a dilute solution.
THE PROCESS
DISTILLEDWATER
DILUTE SUGAR SOLUTION
CONCENTRATED SUGAR SOLUTION
variable in our experiment
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
variable in our experiment
We know that there are 2 types f variable: INDEPENDENT and DEPENDENT variable. But ... in our experiment, which are this variable?
DILUTESUGAR SOLUTION
DISTILLEDWATER
CONCENTRATEDSUGAR SOLUTION
WHAT WE USED:
- 3 bakers;
- a knife;
- 6 sticks of potato (we cut them from only one big potato);
- water;
- sugar;
- a ruler;
- a little bit of patiencie
WHAT HAPPENED?
DILUTE SUGAR SOLUTION
After six hours the sticks in this solution became bigger and they had a harder consistency then thoso in concentrated sugar solution.This because the water enter in the cell, in particular in the chytoplasm and in the vacuole throughthe partially permeable cell memebrane
WHAT HAPPENED?
CONCENTRATED SUGAR SOLUTION
After 6 hours this sticks became smaller than the beginning. We have also noticed that after some hours they started to float and when we have taken away them from the solution they were very sof. This because the water went out of the cells by osmosis and consequently the cell membrane pulls away from the cell membrane.
WHAT HAPPENED?
DISTILLED WATER
After six hours we noticed that the sticks of potato became bigger than the beginning and they were very similar to the sticks in the dilute solution.Infact also in this sticks the water enter in the cell from the high water potential to the low water potential.
THE PROCESS
1) We peeled one potato and then we cut it into 6 sticks of the same size with a knife;2) we prepared three different solution: we put in the bakers the same quantity of water and then we have added in 2 bakers different quantities of sugar. In one some spoon and in the other one only some granules;3) we put the sticks at the same time in the bakers (2 sticks in 1 bakers)4) we have started wait, and during the hours we have taken some photo;5) after 6 hours we have taken off the sticks from the solutions and we have measured the new lenghts
NEW MEASURES AND PHOTO
OSMOSIS
Carolina Fumagalli
Created on March 5, 2024
Start designing with a free template
Discover more than 1500 professional designs like these:
View
Halloween Infographic
View
Halloween List 3D
View
Magic and Sorcery List
View
Journey Map
View
Versus Character
View
Akihabara Connectors Infographic Mobile
View
Mobile mockup infographic
Explore all templates
Transcript
Cecilia, Carolina, Matilde e Matteo 1°BS
40 mm
10 mm
10 mm
experiment on osmosis
With this experiment we wanted to observe the reaction of some sticks of potato in different solutions, to verify the osmosis effect.
WHAT WE USED
WHAT WE UNDERSTOOD
With this experiment we have understood that not only the particles of the solutions can move into or out the cells but also the molecules of the solvents (water). This movement is called OSMOSIS. We also have seen that the sticks in the distilled water and in the dilute sugar solution became bigger than the other in concentrated sugar solution. This because, when the solution is more concentrated, the quantity of water that move down the water potential gradient is smaller than the quantity of water of a dilute solution.
THE PROCESS
DISTILLEDWATER
DILUTE SUGAR SOLUTION
CONCENTRATED SUGAR SOLUTION
variable in our experiment
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
WHAT HAPPENED?
17:00
18:00
16:00
21:00
19:00
20:00
variable in our experiment
We know that there are 2 types f variable: INDEPENDENT and DEPENDENT variable. But ... in our experiment, which are this variable?
DILUTESUGAR SOLUTION
DISTILLEDWATER
CONCENTRATEDSUGAR SOLUTION
WHAT WE USED:
WHAT HAPPENED?
DILUTE SUGAR SOLUTION
After six hours the sticks in this solution became bigger and they had a harder consistency then thoso in concentrated sugar solution.This because the water enter in the cell, in particular in the chytoplasm and in the vacuole throughthe partially permeable cell memebrane
WHAT HAPPENED?
CONCENTRATED SUGAR SOLUTION
After 6 hours this sticks became smaller than the beginning. We have also noticed that after some hours they started to float and when we have taken away them from the solution they were very sof. This because the water went out of the cells by osmosis and consequently the cell membrane pulls away from the cell membrane.
WHAT HAPPENED?
DISTILLED WATER
After six hours we noticed that the sticks of potato became bigger than the beginning and they were very similar to the sticks in the dilute solution.Infact also in this sticks the water enter in the cell from the high water potential to the low water potential.
THE PROCESS
1) We peeled one potato and then we cut it into 6 sticks of the same size with a knife;2) we prepared three different solution: we put in the bakers the same quantity of water and then we have added in 2 bakers different quantities of sugar. In one some spoon and in the other one only some granules;3) we put the sticks at the same time in the bakers (2 sticks in 1 bakers)4) we have started wait, and during the hours we have taken some photo;5) after 6 hours we have taken off the sticks from the solutions and we have measured the new lenghts
NEW MEASURES AND PHOTO